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Annealing Schedule for Spherical Moretti/Murano Glass “Turn On, Ramp up and Work Program”

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Annealing Schedule for Spherical Moretti/Murano Glass “Turn On, Ramp up and Work Program” Annealing Schedule for Spherical Moretti/Murano Glass “Turn On, Ramp Up and Work Program” Annealing temperature range for Moretti or Murano Glass: 940-970 degrees Fahrenheit General Rule of thumb: 30 minutes to one hour of soak time for each .5 (half) inch diameter of Moretti or Murano Below is the computer language for the Jen-Ken Kiln with an AF3P Controller and a Flip Door Turn on the kiln from IDLE press program button and select USER1 using the up Arrow key, then press the Program button. The down arrow button at this point is the program review button. This program will be entered in USER1 and have 3 segments. Ra1 means the first Rate per hour (FULL is located using the down arrow to 0 and press again to FULL), oF1 means the first temperature to go to, and Hd1 means the first Hold time in hours and minutes. User 1 Ra1 Full- deg./hr Full Power oF1 940 degrees 940 degrees F Hd 1 6 Hours (Enter Longest Time Working) Ra 2 Full- deg./hr Full Power oF2 940 degrees Hd 2 30 min 30 minute Soak Prior to Ramp Down for half inch dia. beads Ra 3 600 deg./hr Ramps down to 400 oF3 400 degrees deg. The kiln cools down slowly to room Hd 3 0 min temperature Press Program Key Twice to Start The program is now complete. Note: At the end of the lampworking session if it is less than the 6 hour hold in Hold 1; one needs to use the “Skip Step” function to skip out of Hold 1 and into Hold 2. This will allow the last bead made to get 30 minutes of soak before the kiln ramps down. Important: Do not leave a firing kiln unattended. Annealing Schedules Compliments of FlameTree Glass Inc. www.FlameTreeGlass.com Batch Annealing Program: From a “Cold Start” General “Rule of Thumb” as to the annealing of the soft Soda-Lime glass known at the Moretti or Murano Glass: 30 minutes to 1 hour of soak time for each .1/2 inch diameter of Moretti or Murano glass. Below is the computer language for the Jen-Ken Kiln with a AF3P Controller and a Flip Door Turn on the kiln from IDLE press program button and select USER2 using the up Arrow key, then press the Program button. The down arrow button at this point is the program review button. User 2: This program will be entered in USER2 and have 3 segments. Ra1 means the first Rate per hour (FULL is located using the down arrow to 0 and press again to FULL), oF1 means the first temperature to go to, and Hd1 means the first Hold time in hours and minutes. User 2 Ra1 850 deg./hr (14.16 degrees F per minute) Temp1 940 degrees 940 degrees F Hold 1 6 Hours (Enter Longest Time Working) Ra 2 Full - deg./hr Full Power Temp 940 degrees Hold 2 30 min 30 minute Soak Prior to Ramp Down for 1/2 inch dia. beads Ra 3 600 deg./hr Ramps down to 400 Temp 3 400 degrees degrees. The kiln cools down slowly to Hold 3 0 min room temperature Press Program Key Twice to Start The program is now complete. Note: At the end of the lampworking session if it is less than the 6 hours (user selected time) that is stored in Hold 1; one needs to use the “Skip Step” function to skip out of Hold 1 and into Hold 2. This will allow the last bead made to get 30 minutes of soak before the kiln ramps down. Important: Do not leave a firing kiln unattended. Annealing Schedules Compliments of FlameTree Glass Inc. www.FlameTreeGlass.com Basic Borosilicate Annealing Program Below is the computer language for the Jen-Ken Kiln with a AF3P Controller and a Flip Door Turn on the kiln from IDLE press program button and select USER3 using the up Arrow key, then press the Program button. The down arrow button at this point is the program review button. User 3: This program will be entered in USER3 and have 3 segments. Ra1 means the first Rate per hour (FULL is located using the down arrow to 0 and press again to FULL), oF1 means the first temperature to go to, and Hd1 means the first Hold time in hours and minutes. User 3 Ra1 FULL - deg./hr Full Power Ramp Up Temp1 1050 degrees The annealing temp range for Borosilicate glass is between 1050 and 1125 degrees F Hold 1 6 Hours (Enter Longest Time Working) Ra 2 FULL - deg./hr Full Power Temp 940 degrees Hold 2 30 min 30 minute Soak Prior to Ramp Down for half inch dia. beads Ra 3 600 deg./hr Ramps down to 400 Temp 3 400 degrees degrees. The kiln cools down slowly to Hold 3 0 min room temperature Press Program Key Twice to Start. The program is now complete. Keep in mind that annealing Borosilicate Colors that “strike”…in which most of them do…these striking colors work on the process of nuclei formation.. that give rise to the size and number of crystals formed that in turn produces the resultant color that strikes out. So, for the Ruby family… you might want to anneal them early one in your annealing session, not keeping them in too long.. For over annealing the Boro-Ruby family causes them to over-strike and become livery in appearance. The cadmium based opaque colors are not bound by this law.. for they do not strike, yet one does not want to get them too hot, or be too “harsh on them” when working with them in one’s flame chemistry. So flame chemistry and annealing strike time are the secrets to proper color achievement in Borosilicate Glass. Have Fun! Keep Record Logs of Your Color Annealing Times, and the Flame Chemistry’s that you use in order to master the Boro Color palette. Record the “timing of your work”, and every nuance of it, in the flame chemistries used, annealing times, etc. Note: At the end of the lampworking session if it is less than the 6 hour hold in Hold 1; one needs to use the “Skip Step” function to skip out of Hold 1 and into Hold 2. This will allow the last bead made to get 30 minutes of soak before the kiln ramps down. Important: Do not leave a firing kiln unattended. Annealing Schedules Compliments of FlameTree Glass Inc. www.FlameTreeGlass.com .
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